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The primary disadvantage of in vitro experimental studies is that it may be challenging to extrapolate from the results of in vitro work back to the biology of the intact organism. Investigators doing in vitro work must be careful to avoid over-interpretation of their results, which can lead to erroneous conclusions about organismal and systems ...
Tests of sufficiency in biology are used to determine if the presence of an element permits the biological phenomenon to occur. In other words, if sufficient conditions are met, the targeted event is able to take place. However, this does not mean that the absence of a sufficient biological element inhibits the biological event from occurring.
The term ex vivo means that the samples to be tested have been extracted from the organism. The term in vitro (lit. "within the glass") means the samples to be tested are obtained from a repository. In the case of cancer cells, a strain that would produce favorable results, then grown to produce a control sample and the number of samples ...
DNA synthesis occurs when these nucleotide units are joined to form DNA; this can occur artificially (in vitro) or naturally (in vivo). Nucleotide units are made up of a nitrogenous base (cytosine, guanine, adenine or thymine), pentose sugar (deoxyribose) and phosphate group.
This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
A s he prepares for his second term as President, Donald Trump’s approach on some issues is poised to mirror that of his first term. He's set to once again increase tariffs on imported goods and ...
Donald Trump loved to use tariffs on foreign goods during his first presidency. “There's going to be a lot more tariffs, I mean, he's pretty clear,” said Michael Stumo, the CEO of Coalition ...
In clinical practice, this means that it takes 4 to 5 times the half-life for a drug's serum concentration to reach steady state after regular dosing is started, stopped, or the dose changed. So, for example, digoxin has a half-life (or t 1 / 2 ) of 24–36 h; this means that a change in the dose will take the best part of a week to ...